import axios from 'axios'
import { Notification, MessageBox, Message, Loading } from 'element-ui'
import store from '@/store'
import { TokenKey, getToken, getFullToken } from '@/utils/auth'

import errorCode from '@/utils/errorCode'
import { tansParams, blobValidate } from "@/utils/hongke";
import cache from '@/plugins/cache'
// import { saveAs } from 'file-saver'
const isUM = window.loginType === 'UM'
let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = { show: false };

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
// 创建axios实例
const service = axios.create({
  // 超时
  // timeout: 20000
})

// request拦截器
service.interceptors.request.use(config => {
  // 是否需要设置 token
  const isToken = (config.headers || {}).isToken === false
  const token = isUM ? getFullToken() : getToken()
  // removeToken()
  if (token && !isToken) {
    config.headers[TokenKey] = token // 让每个请求携带自定义token 请根据实际情况自行修改
  }

  /*   if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
      const requestObj = {
        url: config.url,
        data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
        time: new Date().getTime()
      }
      const sessionObj = cache.session.getJSON('sessionObj')
      if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
        cache.session.setJSON('sessionObj', requestObj)
      } else {
        //   const s_url = sessionObj.url;                  // 请求地址
        //   const s_data = sessionObj.data;                // 请求数据
        //   const s_time = sessionObj.time;                // 请求时间
        //   const interval = 1000;                         // 间隔时间(ms)，小于此时间视为重复提交
        //   if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
        //     const message = '数据正在处理，请勿重复提交';
        //     console.warn(`[${s_url}]: ` + message)
        //     Message.warning(message)
        //     // return Promise.reject(new Error(message))
        //   } else {
        //     cache.session.setJSON('sessionObj', requestObj)
        //   }
      }
    } */
  return config
}, error => {
  Promise.reject(error)
})

// 响应拦截器
service.interceptors.response.use(res => {
  // 未设置状态码则默认成功状态
  const code = res.data.code || 200;
  // 获取错误信息
  const msg = errorCode[code] || res.data.msg || errorCode['default']
  // 二进制数据则直接返回
  if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
    return res.data
  }
  // 请求成功，返回数据值
  if (code === 200) {
    return res.data.data
  }

  if (code === 401 || code === 1003) {
    handleSessionExpire()
    return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
  } else if (code === 500) {
    Message({
      message: msg,
      type: 'error'
    })
    return Promise.reject(new Error(msg))
  } else if (code !== 200) {
    Notification.error({
      title: msg
    })
    return Promise.reject('error')
  }
},
  error => {
    let { message, response } = error;
    if (response.status == '401') {
      handleSessionExpire();
    } else {
      if (message == "Network Error") {
        message = "后端接口连接异常";
      }
      else if (message.includes("timeout")) {
        message = "系统接口请求超时";
      }
      else if (message.includes("Request failed with status code")) {
        message = "系统接口" + message.substr(message.length - 3) + "异常";
      }
      Message({
        message: message,
        type: 'error',
        duration: 1000
      })
      return Promise.reject(error)
    }
  }

)

// export default service
export default function request(data) {
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  data.baseURL = data.remoteUrl || process.env.VUE_APP_BASE_API
  const specialFileType = ['Blob', 'File']
  // get请求映射params参数
  if (data.method === 'get' && data.params) {
    let url = data.url + '?' + tansParams(data.params);
    url = url.slice(0, -1);
    data.params = {};
    data.url = url;
  }
  return service(data);
}

export function get(url, params) {
  return request({
    url: url,
    params,
    method: "get"
  });
}
// get 请求下载
export function downLoadFile(url, params) {
  return request({
    method: "get",
    url: url,
    params: params,
    headers: { "Content-Type": "application/json,charset=utf-8" },
    responseType: "arraybuffer" // 二进制流
  });
}

export function post(url, params, responseType) {
  return request({
    url: url,
    data: params,
    method: "post"
  });
}

export function postWithUnAuth(url, params) {
  return request({
    url: url,
    headers: { isToken: false },
    data: params,
    method: "post"
  });
}

// 通用下载方法
export function download(url, params, filename) {
  downloadLoadingInstance = Loading.service({ text: "正在下载数据，请稍候", spinner: "el-icon-loading", background: "rgba(0, 0, 0, 0.7)", })
  return service.post(url, params, {
    transformRequest: [(params) => { return tansParams(params) }],
    headers: { 'Content-Type': 'application/json' },
    responseType: 'blob'
  }).then(async (data) => {
    const isLogin = await blobValidate(data);
    if (isLogin) {
      const blob = new Blob([data])
      // saveAs(blob, filename)
    } else {
      const resText = await data.text();
      const rspObj = JSON.parse(resText);
      const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
      Message.error(errMsg);
    }
    downloadLoadingInstance.close();
  }).catch((r) => {
    Message.error('下载文件出现错误，请联系管理员！')
    downloadLoadingInstance.close();
  })
}

export function gDownload(url, params, filename) {
  downloadLoadingInstance = Loading.service({ text: "正在下载数据，请稍候", spinner: "el-icon-loading", background: "rgba(0, 0, 0, 0.7)", })
  return downLoadFile(url, params).then(async (data) => {
    const isLogin = await blobValidate(data);
    if (isLogin) {
      const blob = new Blob([data])
      saveAs(blob, filename)
    } else {
      const resText = await data.text();
      const rspObj = JSON.parse(resText);
      const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
      Message.error(errMsg);
    }
    downloadLoadingInstance.close();
  }).catch((r) => {
    Message.error('下载文件出现错误，请联系管理员！')
    downloadLoadingInstance.close();
  })
}

function handleSessionExpire() {
  if (!isRelogin.show) {
    isRelogin.show = true
    MessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
      confirmButtonText: '重新登录',
      cancelButtonText: '取消',
      type: 'warning'
    })
      .then(() => {
        isRelogin.show = false
        if (!isUM) {
          window.open('/login', "_self");
          // store.dispatch('LogOut').then(() => {
          //   location.href = '/'
          // })
        } else {
          window.open('/login', "_self");
          // store.dispatch('LogOut').then(() => {
          //   store.dispatch('GetInfo')
          // })
        }
      })
      .catch(() => {

        isRelogin.show = false
      })
  }
}
